Description
The NTI Boiler 6000086874 is the genuine OEM Flame Probe (J1) Harness designed specifically for the NTI Lx400 condensing boiler series. This wiring harness connects the flame probe (ionization sensor) to the boiler’s control system, enabling accurate and continuous flame detection during burner operation. Replacing a worn, damaged, or failed harness restores proper flame-sensing communication and helps prevent nuisance lockouts or unsafe operating conditions.
Key Features
- Genuine OEM NTI Boiler replacement part for the Lx400 series
- Designed for the J1 flame probe connector position
- Ensures reliable electrical connection between the flame probe and boiler control board
- Helps maintain accurate ionization-based flame sensing
- Direct drop-in replacement — no modification required
- Supports safe, code-compliant boiler operation
Applications
- NTI Lx400 condensing boiler series
- Residential and light commercial hydronic heating systems
Why Replace the Flame Probe Harness?
Over time, wiring harnesses can degrade due to heat cycling, vibration, and age. A compromised J1 harness can cause intermittent flame-sensing faults, repeated boiler lockouts, or failure to establish a flame signal. Using the genuine NTI part ensures proper fit, insulation integrity, and long-term reliability.
Ordering Information
- SKU: 6000086874
- Brand: NTI Boiler
- Compatible Model: Lx400 Series
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